dolphins

am checking the impact of the different type of boats on the dolphins behaviour and i have two type of variables first is boat type ( fishing , recreation , cargo etc ) and i have the dolphins behaviour which divided into 4 type of behaviour ( rest , social , travel , feed) i need some help...

i have 4 numerical variables ( 4 type of boats )and 1 nominal variable ( dolphins behaviour wether eating or social or resting and other) and i want to know if these boat affecting these behaviour and which boat is the most significant one i mean which boat is the most annoying to the...